Bút Lông Vĩnh Viễn Màu Đen & Trắng ARTISTRO 6 Cây, Bút Vẽ Dầu Đầu Đôi (0.7mm+3mm), Bút Vẽ Chống Nước Cho Vẽ Đá, Gốm, Thủy Tinh, Gỗ, Lốp, Vải & Nhiều

I’ve used these on tires and the oil-based ink glides on smoothly without beading up or skipping, even with the fine 0.7mm tip. The dual ends cover both thin lines and bigger fills in one marker, which is handy for keeping detail work clean.

The dual tips are a lifesaver—I switched between the 0.7mm for fine lines and the 3mm for filling in letters without any clogging. Ink glides on smoothly over a dark rubber surface and hasn't smudged even after a few days of sitting outside.

I’ve been using these on ceramic mugs for a few weeks now and the 3mm side lays down color so evenly that I don’t need a second pass. The fine tip hasn’t clogged once, which is honestly rare for paint markers I’ve tried before.